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4 years ago

Simplify.[2 × (10 + 5)] - 5

Mathematics

2 answers:

Sloan [31]4 years ago

7 0

$[2 \times (10 + 5)] - 5 \\ \\ 2 \times 15 - 5 \\ \\ 30 - 5 \\ \\ 25 \\ \\ Answer: \fbox {C) 25}$

N76 [4]4 years ago

4 0

2(10+5)−5 =(2)(15)−5 =30−5 =25 C is the answer.

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Write the equation of a graph going through the points (1,11) and (-5,-7)

ELEN [110]

Answer is in the file below

tinyurl.com/wpazsebu

4 0

3 years ago

Read 2 more answers

Factor the polynomial.<br> 5x4 + 10x3 + 15x?

attashe74 [19]

Answer:

Step-by-step explanation:

5x^4 + 10x^3 + 15x

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3 0

3 years ago

Suppose a large shipment of telephones contained 21% defectives. If a sample of size 498 is selected, what is the probability th

grandymaker [24]

Answer:

$P(-3\% < x < 3\%) = 0.901$

Step-by-step explanation:

Given

$p = 21\%$

$n = 498$

Required

$P(-3\% < x < 3\%)$

First, we calculate the z score

$z = \sqrt{p * (1 - p)/n}$

$z = \sqrt{21\% * (1 - 21\%)/498}$

$z = \sqrt{21\% * (79\%)/498}$

$z = \sqrt{0.1659/498}$

$z = \sqrt{0.000333}$

$z = 0.0182$

So:

$P(-3\% < x < 3\%) = P(-3\%/0.0182 < z$

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From z probability, we have:

$P(-3\% < x < 3\%) = 0.901$

6 0

3 years ago

(1 point) Find a formula for the nth term in the sequence: 17,−17/8,17/27,−17/64,17/125,…

lana [24]

Given:

The sequence is:

$17,-\dfrac{17}{8},\dfrac{17}{27},-\dfrac{17}{64},\dfrac{17}{125},...$

To find:

The formula for the nth term in the given sequence.

Solution:

We have,

$17,-\dfrac{17}{8},\dfrac{17}{27},-\dfrac{17}{64},\dfrac{17}{125},...$

The given sequence can be written as

$\dfrac{17}{1^3},-\dfrac{17}{2^3},\dfrac{17}{3^3},-\dfrac{17}{4^3},\dfrac{17}{5^3},...$

The sign are alternative and the absolute value of each term can be defined by the expression $\dfrac{17}{n^3}$ , where n is a natural number.

So, the required formula is:

$a_n=(-1)^{n+1}\dfrac{17}{n^3}$

Therefore, the formula for nth term in the given sequence is $a_n=(-1)^{n+1}\dfrac{17}{n^3}$ .

8 0

3 years ago

I need help plz and explination its confusing

Mamont248 [21]

Answer:

12.56

Step-by-step explanation:

The formula for circumference is either πr² πd. Thats basically just multiplying. All you have to do is take the the diameter and multiply it times pi and you get the answer. In some cases they want you to use the radius; radius is diameter divided by 2. Example is if 4 is the diameter 2 is the radius. For this one i did 4 times 3.14(pi).

I hope that helps!

3 0

3 years ago